Key-locked cap for tanks



April 21, 1925. 1,534,836

M. H. BREDE ET Al' KEY LOCKED CAP FOR TANKS Filed NOV. 15, 1922 apr. ai, 192s.

' STTES 5H. nenne, or mnnaroms, MINNESOTA, AND omvn I.. Lonernn, or vente,

. scorn nuora.

KEY-menno CAP ron 'rentasy appease. sae november is, ieee. serial no. soneto..

afili enable others skilled in the art to which it uppertains to make and use the same.

@ur invention providesl a simple and highly ecient key-locked cap for tanks and is especially intende-dior closing the filling tribes oi' automobile gasoline tanks and the necks oi automobile radiators. Generally stated, .the invention consists of the novel devices, arrangement and combinations of hereinafter described and defined inthe cleims.'

llt is a very frequent occurrence that asoline is stolen from the tanks ci antonio iles. i@ blot only does-this stealing of gasoline cause considerable loss but-it usually takes place when the draining of the tank causes very seriunisy inconvenience and, indirectly, furioss oi time and money. lin northern-climates in vcold weather, aleeholv and other quite expensive radiator ere very generally used and it is not infrequent that the radiators P have been drained to obtain these anti-freezing fluids. @or improved cap, when `used for either the above urposes, prevents Stealing of the *duide `an resulting inconveniences.

lin the accompanying drawings, which illustrate, the invention, like characters indicate like .partsthroughout the several views. v y Referring to the draw-ings:A lliigl isa plan view showing the improved hey-locked' radiator cap applied to the .iiller neck of a gasoline tank; lliig. 2 is a view partly-'n side elevation .und partly in section` on'tlie line 2,--2 of litige. l; and

liig. 3 is a fragmentary horizontal section on theline 34-3 of Fig. 2. y

"lihe 4innneral 5 indicates the p filler tube orneek of a gasoline tank, the 'sume having they customary externally threaded portion d onto which-the customary cap is generally 'in carrying outjour. invention,

we provide an annular tube extension in the :form of e. collar 'Z' internally threaded so that it may be screwed onto the thread 6 of the tube 5. To positively lock the sleeve 7 to the tube 5, a. small vertical hole dfi is preferably bored through the engaged threads of said members 6 and 7, and a loch: pin 8 is driven into said hole, as best shown 1n Figs. 2 and 3. Preferably, the .collar f isl provided with an internal annular lock nut or ring 9 between which and the'up'pe'r end ofthe tube 5 a gasket 10 isinter.- i

posed to thereby form a 'tight joint between the members 6, 7 and 9.

In-its upper edge, the collar 7 is formed with an annular seat for a gasket 11 that is preferably of rubber and round in cross- 'Sectiom In this preferred construction, the

collar 7 is (provided at one side with a pair of outstan ing relatively large ears 12 and at the opposite side with outstanding relatively small ears 13.

A. cap 14 is preferably a cast circular structure formed vwith a centrally depend ing portion 15 and with an outstanding flange `16, which latter rests on the gasket 11. lAt one side, this cap 14 has an out-` standing ear 17 Apivotally connected to .the ears 12 by a hinge pin 18. At its opposite sidez said cap is provided with a split lug 19, into the cap of which is adapted to be swung a clamping bow 20 that is hinwed tothe ears 13 and is provided at its ythreaded end with a thumb nut 21, which, when screwed onto the lug 19,tigl1tly forces the cap onto the gasket 11.

Near its upper end, the coller 7 is formed with an inwardly projecting loclrledge 22, and v-fo'r engagement therewith, the depending.` portion of the cap 1li is provided with a lock bolt 23 located diametrically 'opposite titl 'EES

to the cap hinge. This lock bolt 23 is` adapted to :be `moved radiallyby the cus-v tomary or any other suitable lock mechanism Edili into the` keyhole of the lock 25, the latter .is

shownv as provided with e. pivoted keyhole cover 26, shown asswung from working position in Fig. 2 butv movable over the keyhole when the key :h asbeen removed from the pin s x i the loch. ifitii the arrangement above described, the entire loci-i moves with the hinged oep to end fiom operative osition.

53? reference to Fig. 2, it will noted that the hole for the insertion of the lock pin or key 8 is extended through the ein'eeds of the lock ring 9, as shown, et 35,

that the seid pin et its upper end termizetes beiow the `lower plane of said lock ring. Hence, when the lock ring is slightly tumed from the position shown in Fig. 2%., 8 is conceeed where it cannot be dseon'esed end czinno't be removed This vee-j: secin'ely locks 'the coiia 7 to the iiler tube or neei, Wisst ii oie-iin is:

i. The ycombinetion with e filler tube or neck hei/'ing a leek iedge, of e displaoeable csp fo? seid tube, e yielding gasket inter posed between seid tube end oep, clamping `ineens-ier drewmg sind csp down upon seid l gasket and compressing the same, and a.

" boit arranged lock' independent o seid clamping means, mounted in seid oep sind including a lock to be projected under the lock ledge when the oep is drawn down 4by the demping means end the gasket compressed.

2. The combination with e filler tube or neck, of e coller seiewedonto the seme, a

demping Fing Working with threaded ener.; meuse gaement with the interior of said eolien aube reacting against the upper end of seid tu having a lock for securing the same to sein collar.

. The combination with e` ller tube or l neck, of e coller screw-threaded onto seid tube and projecting above the seme and having e Iock-bolt-engaging detent, formed therewith above said tube e cap hinged to one side of said collar, said collar et the opposite side of the hinge having en externei; cap-engaging clamp, a compressible gus ket interposed between and a keyaetuated lock mounted in seid cap and including e lock bolt that is engegeable with the detent of said coller when the cap is drawn down by the clamp and the gasket compressed;

In testimony whereof we affix our signatures.'

MARTIN H. BREDE. @LIVE L. LONGPRE.

said collar and osg, d

,'a lock pm inserteble through lcoin-f. i 

